Madonna is "overjoyed" at making her twin daughters officially a part of her family!

The 58-year-old singer confirmed she's adopted twin sisters from Malawi on Wednesday, and Instagrammed a photo of herself holding their hands. Madonna rocks a yellow floral dress in the priceless pic, as her 4-year-old girls adorably match in blue-and-white dresses.

"I can officially confirm I have completed the process of adopting twin sisters from Malawi and am overjoyed that they are now part of our family," Madonna writes. "I am deeply grateful to all those in Malawi who helped make this possible, and I ask the media please to respect our privacy during this transitional time. Thank you also to my friends, family and my very large team for all your support and Love!"

On Tuesday, Malawi Judiciary Spokesperson Mlenga Mvula confirmed to ET that the "Ray of Light" singer had been granted an adoption order so that she can proceed with her adoption in the African country.

"The father is still alive but the mother died a week later after delivering the little kids on 29 August 2012," the Judiciary Spokesperson also told ET about the girls' background. "Madonna came to the court on Tuesday with her lawyer Mr. Mvalo. The father of the children was also in court together with the uncle of the little girls. She looked very happy in court. She left with her two new daughters."

The pop icon has adopted from Malawi twice before. In 2008, she adopted son David Banda with then-husband, Guy Ritchie. A year later, she went back to the country and adopted daughter Mercy James. Both children are now 11 years old.

In addition to her now four adopted children, the singer also has two biological children, 20-year-old Lourdes Leon and 16-year-old Rocco Ritchie.